Dimers of IgA are Present In

Question

Dimers of IgA are present in
A) breast milk colostrum.
B) saliva.
C) tears.
D) breast milk colostrum, saliva, and tears.

Accepted Answer

Dimers of IgA are present in breast milk colostrum, saliva, and tears. IgA dimers are a type of immunoglobulin A molecule that is composed of two IgA subunits linked by a J chain. These molecules play an important role in mucosal immunity, protecting against pathogens that enter the body through mucosal surfaces such as the mouth and gastrointestinal tract.